Replacing Model in Rhino

marentette · August 1, 2023, 3:20pm

Is there a more efficient way to make changes using python to the current model inside Rhino without using Grasshopper?

The below script works but I am looking for a quicker way that I could develop into a Pollination app:

from honeybee.model import Model

# Load the Honeybee Model from the JSON file
hbjson_path = r"path_to_model\model_name.hbjson"
model = Model.from_hbjson(hbjson_path)
#Make changes to the model below...

#write changes to file, reload hbjson into Rhino
model.to_hbjson(name=None,
                folder=r"path_to_model\hbjson_out",
                indent=None,
                included_prop=None,
                triangulate_sub_faces=False)

mostapha · August 1, 2023, 8:55pm

Hi @marentette,

You can use get_hbjson and send_hbjson functions from pollination_streamlit_io to get the model from Rhino and replace it in Rhino after the update. See the sample code here as an example:

github.com

mostaphaRoudsari/rename-hbjson-faces/blob/master/app/app.py

import streamlit as st
from honeybee.model import Model
from pollination_streamlit_io import get_hbjson, send_hbjson

st.header('Rename room faces based on room name and orientation')
st.info(
    'This app takes a Pollination model and rename the display name for faces based on '
    'the room display name and the orientation of the face.'
)

model = get_hbjson(
    key='get-po-model', label='Get Pollination Model',
    options={'selection': {'selected': True}}
)

if model:
    model: Model = Model.from_dict(model['hbjson'])
    for room in model.rooms:
        st.write(f'Rename faces for: {room.display_name}')
        room_name = room.display_name

This file has been truncated. show original

Here is the live version of the app:

Here is a short preview. The app gets the model from Rhino, renames the faces, and then replaces the model in Rhino with the updated model.

One thing to keep in mind is that it looks like we don’t register these changes in the Rhino plugin. This means the Undo command won’t undo these changes. I would consider this a bug.

cc: @mingbo

Let me know if you have any other questions.

marentette · August 2, 2023, 2:37am

Thanks @mostapha for the example!

Having this as a transaction that you could roll back in the interface would be great. Is there pollination_streamlit_io documentation available?

mostapha · August 2, 2023, 3:57pm

Unfortunately, we haven’t kept up with the documentation as we changed it frequently. We used to have an app that was used for documentation but I made it private.

I can give you access to the app but probably the best way to help you is to do it on a case-by-case basis depending on what you are trying to do.

@antonellodinunzio, we should consider updating the app at some point now that the code is in a much more stable place.